381694319 has 4 divisors (see below), whose sum is σ = 404146944. Its totient is φ = 359241696.

The previous prime is 381694301. The next prime is 381694337. The reversal of 381694319 is 913496183.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (381694301) and next prime (381694337).

It is a cyclic number.

It is not a de Polignac number, because 381694319 - 2⁸ = 381694063 is a prime.

It is a super-2 number, since 2×381694319² = 291381106313747522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381694319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381694349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11226287 + ... + 11226320.

It is an arithmetic number, because the mean of its divisors is an integer number (101036736).

Almost surely, 2^381694319 is an apocalyptic number.

381694319 is a deficient number, since it is larger than the sum of its proper divisors (22452625).

381694319 is a wasteful number, since it uses less digits than its factorization.

381694319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22452624.

The product of its digits is 139968, while the sum is 44.

The square root of 381694319 is about 19536.9987203767. The cubic root of 381694319 is about 725.3905586521.

The spelling of 381694319 in words is "three hundred eighty-one million, six hundred ninety-four thousand, three hundred nineteen".